Demand for ozone-depleting substances and hydrofluorocarbons estimated by a Tier 2 emission inventory model compared to top-down chemical consumption data for the US

Figures & data

Table 1. ODSs and replacements.

ODS	Sector of primary use^a	Replacement	Composition (% by weight)
			HFC-32	HFC-125	HFC-134a	HFC-143a	HFC-245fa^b
CFC-12^b	Motor vehicle air conditioning	HFC-134a			100
HCFC-22	Air conditioning	R-407C	23	25	52
		R-410A	50	50
	Refrigeration	R-404A		44	4	52
		R-407A	20	40	40
		R-417A		46.6	50
		R-507A		50		50
HCFC-141b	Foam blowing	HFC-245fa					100
HCFC-142b	Foam blowing	HFC-134a			100
Notes: ^aAs estimated by Vintaging Model for 2003–2010. ^bNot analysed in this paper.

Figure 1. US HCFC-22 reported consumption and modelled demand.

Figure 2. US HCFC-22 year X reported consumption and year X + 1 modelled demand.

Figure 3. US HCFC-141b reported consumption and modelled demand.

Figure 4. US HCFC-142b reported consumption and modelled demand and US new home starts.

Figure 5. US HFC-134a reported consumption and modelled demand.

Figure 6. US HFC-32 reported consumption and modelled demand.

Figure 7. US HFC-143a reported consumption and modelled demand.

Figure 8. US HFC-125 reported consumption, modelled demand and calculated consumption.